Do We Have This One?
? I couldn't find anything matching it in searching for "one word name" so I'm assuming no. Either way, probably Needs a Better Title
Essentially the inverse of Pokémon Speak
, this trope applies to situations when characters with a limited or one-word vocabulary are named for that one word. Often, this will occur because other characters don't know this character's name, and are uncomfortable with not having something to call them beyond "Hey, you." The simple solution: take the only word(s) they ever utter and turn that into their name.